Get Window Coordinates of Touch in Gesture Recognizer in Swift?

Question

I'm dragging a CALayer out of one UIView to another using a UIPanGestureRecognizer. In the UIGestureRecognizerState.Changed method, I am calling to move the CALayer with

var touchLocation = recognizer.locationInView(recognizer.view)
self.panForTranslation(touchLocation)

However touchLocation is returning the CALayers position relative to it's frame, not the screen coordinates.

How can I get a UITouch location of the exact point the finger is on screen?

Answer 1

Try this:

var touchLocation = recognizer.locationInView(recognizer.view.window)
self.panForTranslation(touchLocation)